Minimum depth requirement for sewer, gas, water, and electrical lines/conduits?
Sewer line depth: 12″ of cover measured from the top of pipe. Gas line depth iron pipe: 12″ of cover measured from the top of pipe. Gas line depth poly pipe: 18″ of cover measured from the top of pipe. Water line depth: 12″ of cover measured from the top of pipe. Electrical line depth: 18″ of cover measured from the top of pipe.